Hi hbvf4qnfbixy,
Thank you for reaching out and sharing such a detailed timeline of what you have experienced. I am truly sorry to hear that you are locked out of booting Battlefield V after purchasing it on Steam, and I can understand how incredibly confusing and frustrating it must be to deal with these conflicting ownership messages and broken progression.
Based on the details you shared, the core issue preventing your game from booting is that your Steam account is currently linked to a new EA account, while your Xbox profile (which has your previous game data) remains tied to your old EA account. Because EA App games cannot recognize cross-ownership or merge progress across two completely separate EA accounts, the system is detecting a mismatch between the credentials used to download the game and the account trying to launch it.
To resolve this launch error and get your progression back, you will need to align your platform accounts. Specifically, you will need to unlink your Steam account from the new EA account and link it to your old EA account instead, so both your Steam purchase and Xbox progress reside under the same profile. You can check the guidelines on how to safely manage your linked accounts here:
How to unlink from an EA Account
Please keep in mind that unlinking platform profiles can sometimes have restrictions or impact other active game progression on that new account. If you encounter any restrictions or need manual help migrating your Steam link over to your original EA account, please scroll to the bottom of that guide page and select the Contact Us option to reach our live support advisors. Alternatively, if you run into any technical blocks with the main help portal, you can also submit your request through our direct backup webform.
I truly hope our team can help you get your accounts properly aligned soon so you can finally boot up and enjoy Battlefield V. Thank you again for your patience and cooperation.